Escape from Louvre Museum Game

Today, the class went on a field trip and visited the Louvre to learn more about the French Revolution. The exhibition was huge. After a few rooms you got tired and sit down on a bench. You just closed your eyes for a second, but when you opened it everyone had already left. It seems it wasn't just a few seconds after all. After checking room after room, it became certain that you're alone and the museum is closed. The security guard might be very lazy and didn't check the whole building, just locked the doors. Let's find a way out or find the guard and tell him what happened. Good luck!